'''Circular reasoning''' is a form of [[Logical fallacy#Proof by assertion|proof by assertion]] in which one uses a conclusion of an argument as the [[premise]] to that same argument. This is also known as ''petitio principii'' or ''begging the question.''
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'''Circular reasoning''' is a form of [[Logical fallacy#Proof by assertion|proof by assertion]], often used by [[Atheist|Atheists]] in which one uses a conclusion of an argument as the [[premise]] to that same argument. This is also known as ''petitio principii'' or ''begging the question.''
It is considered invalid and therefore is not permitted by the rules of [[formal logic]].
It is considered invalid and therefore is not permitted by the rules of [[formal logic]].